1 /* 2 * cx18 init/start/stop/exit stream functions 3 * 4 * Derived from ivtv-streams.c 5 * 6 * Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl> 7 * Copyright (C) 2008 Andy Walls <awalls@md.metrocast.net> 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation; either version 2 of the License, or 12 * (at your option) any later version. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 22 * 02111-1307 USA 23 */ 24 25 #include "cx18-driver.h" 26 #include "cx18-io.h" 27 #include "cx18-fileops.h" 28 #include "cx18-mailbox.h" 29 #include "cx18-i2c.h" 30 #include "cx18-queue.h" 31 #include "cx18-ioctl.h" 32 #include "cx18-streams.h" 33 #include "cx18-cards.h" 34 #include "cx18-scb.h" 35 #include "cx18-dvb.h" 36 37 #define CX18_DSP0_INTERRUPT_MASK 0xd0004C 38 39 static struct v4l2_file_operations cx18_v4l2_enc_fops = { 40 .owner = THIS_MODULE, 41 .read = cx18_v4l2_read, 42 .open = cx18_v4l2_open, 43 .unlocked_ioctl = video_ioctl2, 44 .release = cx18_v4l2_close, 45 .poll = cx18_v4l2_enc_poll, 46 .mmap = cx18_v4l2_mmap, 47 }; 48 49 /* offset from 0 to register ts v4l2 minors on */ 50 #define CX18_V4L2_ENC_TS_OFFSET 16 51 /* offset from 0 to register pcm v4l2 minors on */ 52 #define CX18_V4L2_ENC_PCM_OFFSET 24 53 /* offset from 0 to register yuv v4l2 minors on */ 54 #define CX18_V4L2_ENC_YUV_OFFSET 32 55 56 static struct { 57 const char *name; 58 int vfl_type; 59 int num_offset; 60 int dma; 61 u32 caps; 62 } cx18_stream_info[] = { 63 { /* CX18_ENC_STREAM_TYPE_MPG */ 64 "encoder MPEG", 65 VFL_TYPE_GRABBER, 0, 66 PCI_DMA_FROMDEVICE, 67 V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE | 68 V4L2_CAP_AUDIO | V4L2_CAP_TUNER 69 }, 70 { /* CX18_ENC_STREAM_TYPE_TS */ 71 "TS", 72 VFL_TYPE_GRABBER, -1, 73 PCI_DMA_FROMDEVICE, 74 }, 75 { /* CX18_ENC_STREAM_TYPE_YUV */ 76 "encoder YUV", 77 VFL_TYPE_GRABBER, CX18_V4L2_ENC_YUV_OFFSET, 78 PCI_DMA_FROMDEVICE, 79 V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE | 80 V4L2_CAP_STREAMING | V4L2_CAP_AUDIO | V4L2_CAP_TUNER 81 }, 82 { /* CX18_ENC_STREAM_TYPE_VBI */ 83 "encoder VBI", 84 VFL_TYPE_VBI, 0, 85 PCI_DMA_FROMDEVICE, 86 V4L2_CAP_VBI_CAPTURE | V4L2_CAP_SLICED_VBI_CAPTURE | 87 V4L2_CAP_READWRITE | V4L2_CAP_TUNER 88 }, 89 { /* CX18_ENC_STREAM_TYPE_PCM */ 90 "encoder PCM audio", 91 VFL_TYPE_GRABBER, CX18_V4L2_ENC_PCM_OFFSET, 92 PCI_DMA_FROMDEVICE, 93 V4L2_CAP_TUNER | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE, 94 }, 95 { /* CX18_ENC_STREAM_TYPE_IDX */ 96 "encoder IDX", 97 VFL_TYPE_GRABBER, -1, 98 PCI_DMA_FROMDEVICE, 99 }, 100 { /* CX18_ENC_STREAM_TYPE_RAD */ 101 "encoder radio", 102 VFL_TYPE_RADIO, 0, 103 PCI_DMA_NONE, 104 V4L2_CAP_RADIO | V4L2_CAP_TUNER 105 }, 106 }; 107 108 109 static void cx18_dma_free(struct videobuf_queue *q, 110 struct cx18_stream *s, struct cx18_videobuf_buffer *buf) 111 { 112 videobuf_waiton(q, &buf->vb, 0, 0); 113 videobuf_vmalloc_free(&buf->vb); 114 buf->vb.state = VIDEOBUF_NEEDS_INIT; 115 } 116 117 static int cx18_prepare_buffer(struct videobuf_queue *q, 118 struct cx18_stream *s, 119 struct cx18_videobuf_buffer *buf, 120 u32 pixelformat, 121 unsigned int width, unsigned int height, 122 enum v4l2_field field) 123 { 124 struct cx18 *cx = s->cx; 125 int rc = 0; 126 127 /* check settings */ 128 buf->bytes_used = 0; 129 130 if ((width < 48) || (height < 32)) 131 return -EINVAL; 132 133 buf->vb.size = (width * height * 2); 134 if ((buf->vb.baddr != 0) && (buf->vb.bsize < buf->vb.size)) 135 return -EINVAL; 136 137 /* alloc + fill struct (if changed) */ 138 if (buf->vb.width != width || buf->vb.height != height || 139 buf->vb.field != field || s->pixelformat != pixelformat || 140 buf->tvnorm != cx->std) { 141 142 buf->vb.width = width; 143 buf->vb.height = height; 144 buf->vb.field = field; 145 buf->tvnorm = cx->std; 146 s->pixelformat = pixelformat; 147 148 /* HM12 YUV size is (Y=(h*720) + UV=(h*(720/2))) 149 UYUV YUV size is (Y=(h*720) + UV=(h*(720))) */ 150 if (s->pixelformat == V4L2_PIX_FMT_HM12) 151 s->vb_bytes_per_frame = height * 720 * 3 / 2; 152 else 153 s->vb_bytes_per_frame = height * 720 * 2; 154 cx18_dma_free(q, s, buf); 155 } 156 157 if ((buf->vb.baddr != 0) && (buf->vb.bsize < buf->vb.size)) 158 return -EINVAL; 159 160 if (buf->vb.field == 0) 161 buf->vb.field = V4L2_FIELD_INTERLACED; 162 163 if (VIDEOBUF_NEEDS_INIT == buf->vb.state) { 164 buf->vb.width = width; 165 buf->vb.height = height; 166 buf->vb.field = field; 167 buf->tvnorm = cx->std; 168 s->pixelformat = pixelformat; 169 170 /* HM12 YUV size is (Y=(h*720) + UV=(h*(720/2))) 171 UYUV YUV size is (Y=(h*720) + UV=(h*(720))) */ 172 if (s->pixelformat == V4L2_PIX_FMT_HM12) 173 s->vb_bytes_per_frame = height * 720 * 3 / 2; 174 else 175 s->vb_bytes_per_frame = height * 720 * 2; 176 rc = videobuf_iolock(q, &buf->vb, NULL); 177 if (rc != 0) 178 goto fail; 179 } 180 buf->vb.state = VIDEOBUF_PREPARED; 181 return 0; 182 183 fail: 184 cx18_dma_free(q, s, buf); 185 return rc; 186 187 } 188 189 /* VB_MIN_BUFSIZE is lcm(1440 * 480, 1440 * 576) 190 1440 is a single line of 4:2:2 YUV at 720 luma samples wide 191 */ 192 #define VB_MIN_BUFFERS 32 193 #define VB_MIN_BUFSIZE 4147200 194 195 static int buffer_setup(struct videobuf_queue *q, 196 unsigned int *count, unsigned int *size) 197 { 198 struct cx18_stream *s = q->priv_data; 199 struct cx18 *cx = s->cx; 200 201 *size = 2 * cx->cxhdl.width * cx->cxhdl.height; 202 if (*count == 0) 203 *count = VB_MIN_BUFFERS; 204 205 while (*size * *count > VB_MIN_BUFFERS * VB_MIN_BUFSIZE) 206 (*count)--; 207 208 q->field = V4L2_FIELD_INTERLACED; 209 q->last = V4L2_FIELD_INTERLACED; 210 211 return 0; 212 } 213 214 static int buffer_prepare(struct videobuf_queue *q, 215 struct videobuf_buffer *vb, 216 enum v4l2_field field) 217 { 218 struct cx18_videobuf_buffer *buf = 219 container_of(vb, struct cx18_videobuf_buffer, vb); 220 struct cx18_stream *s = q->priv_data; 221 struct cx18 *cx = s->cx; 222 223 return cx18_prepare_buffer(q, s, buf, s->pixelformat, 224 cx->cxhdl.width, cx->cxhdl.height, field); 225 } 226 227 static void buffer_release(struct videobuf_queue *q, 228 struct videobuf_buffer *vb) 229 { 230 struct cx18_videobuf_buffer *buf = 231 container_of(vb, struct cx18_videobuf_buffer, vb); 232 struct cx18_stream *s = q->priv_data; 233 234 cx18_dma_free(q, s, buf); 235 } 236 237 static void buffer_queue(struct videobuf_queue *q, struct videobuf_buffer *vb) 238 { 239 struct cx18_videobuf_buffer *buf = 240 container_of(vb, struct cx18_videobuf_buffer, vb); 241 struct cx18_stream *s = q->priv_data; 242 243 buf->vb.state = VIDEOBUF_QUEUED; 244 245 list_add_tail(&buf->vb.queue, &s->vb_capture); 246 } 247 248 static struct videobuf_queue_ops cx18_videobuf_qops = { 249 .buf_setup = buffer_setup, 250 .buf_prepare = buffer_prepare, 251 .buf_queue = buffer_queue, 252 .buf_release = buffer_release, 253 }; 254 255 static void cx18_stream_init(struct cx18 *cx, int type) 256 { 257 struct cx18_stream *s = &cx->streams[type]; 258 259 memset(s, 0, sizeof(*s)); 260 261 /* initialize cx18_stream fields */ 262 s->dvb = NULL; 263 s->cx = cx; 264 s->type = type; 265 s->name = cx18_stream_info[type].name; 266 s->handle = CX18_INVALID_TASK_HANDLE; 267 268 s->dma = cx18_stream_info[type].dma; 269 s->v4l2_dev_caps = cx18_stream_info[type].caps; 270 s->buffers = cx->stream_buffers[type]; 271 s->buf_size = cx->stream_buf_size[type]; 272 INIT_LIST_HEAD(&s->buf_pool); 273 s->bufs_per_mdl = 1; 274 s->mdl_size = s->buf_size * s->bufs_per_mdl; 275 276 init_waitqueue_head(&s->waitq); 277 s->id = -1; 278 spin_lock_init(&s->q_free.lock); 279 cx18_queue_init(&s->q_free); 280 spin_lock_init(&s->q_busy.lock); 281 cx18_queue_init(&s->q_busy); 282 spin_lock_init(&s->q_full.lock); 283 cx18_queue_init(&s->q_full); 284 spin_lock_init(&s->q_idle.lock); 285 cx18_queue_init(&s->q_idle); 286 287 INIT_WORK(&s->out_work_order, cx18_out_work_handler); 288 289 INIT_LIST_HEAD(&s->vb_capture); 290 s->vb_timeout.function = cx18_vb_timeout; 291 s->vb_timeout.data = (unsigned long)s; 292 init_timer(&s->vb_timeout); 293 spin_lock_init(&s->vb_lock); 294 if (type == CX18_ENC_STREAM_TYPE_YUV) { 295 spin_lock_init(&s->vbuf_q_lock); 296 297 s->vb_type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 298 videobuf_queue_vmalloc_init(&s->vbuf_q, &cx18_videobuf_qops, 299 &cx->pci_dev->dev, &s->vbuf_q_lock, 300 V4L2_BUF_TYPE_VIDEO_CAPTURE, 301 V4L2_FIELD_INTERLACED, 302 sizeof(struct cx18_videobuf_buffer), 303 s, &cx->serialize_lock); 304 305 /* Assume the previous pixel default */ 306 s->pixelformat = V4L2_PIX_FMT_HM12; 307 s->vb_bytes_per_frame = cx->cxhdl.height * 720 * 3 / 2; 308 s->vb_bytes_per_line = 720; 309 } 310 } 311 312 static int cx18_prep_dev(struct cx18 *cx, int type) 313 { 314 struct cx18_stream *s = &cx->streams[type]; 315 u32 cap = cx->v4l2_cap; 316 int num_offset = cx18_stream_info[type].num_offset; 317 int num = cx->instance + cx18_first_minor + num_offset; 318 319 /* 320 * These five fields are always initialized. 321 * For analog capture related streams, if video_dev.v4l2_dev == NULL then the 322 * stream is not in use. 323 * For the TS stream, if dvb == NULL then the stream is not in use. 324 * In those cases no other fields but these four can be used. 325 */ 326 s->video_dev.v4l2_dev = NULL; 327 s->dvb = NULL; 328 s->cx = cx; 329 s->type = type; 330 s->name = cx18_stream_info[type].name; 331 332 /* Check whether the radio is supported */ 333 if (type == CX18_ENC_STREAM_TYPE_RAD && !(cap & V4L2_CAP_RADIO)) 334 return 0; 335 336 /* Check whether VBI is supported */ 337 if (type == CX18_ENC_STREAM_TYPE_VBI && 338 !(cap & (V4L2_CAP_VBI_CAPTURE | V4L2_CAP_SLICED_VBI_CAPTURE))) 339 return 0; 340 341 /* User explicitly selected 0 buffers for these streams, so don't 342 create them. */ 343 if (cx18_stream_info[type].dma != PCI_DMA_NONE && 344 cx->stream_buffers[type] == 0) { 345 CX18_INFO("Disabled %s device\n", cx18_stream_info[type].name); 346 return 0; 347 } 348 349 cx18_stream_init(cx, type); 350 351 /* Allocate the cx18_dvb struct only for the TS on cards with DTV */ 352 if (type == CX18_ENC_STREAM_TYPE_TS) { 353 if (cx->card->hw_all & CX18_HW_DVB) { 354 s->dvb = kzalloc(sizeof(struct cx18_dvb), GFP_KERNEL); 355 if (s->dvb == NULL) { 356 CX18_ERR("Couldn't allocate cx18_dvb structure for %s\n", 357 s->name); 358 return -ENOMEM; 359 } 360 } else { 361 /* Don't need buffers for the TS, if there is no DVB */ 362 s->buffers = 0; 363 } 364 } 365 366 if (num_offset == -1) 367 return 0; 368 369 /* initialize the v4l2 video device structure */ 370 snprintf(s->video_dev.name, sizeof(s->video_dev.name), "%s %s", 371 cx->v4l2_dev.name, s->name); 372 373 s->video_dev.num = num; 374 s->video_dev.v4l2_dev = &cx->v4l2_dev; 375 s->video_dev.fops = &cx18_v4l2_enc_fops; 376 s->video_dev.release = video_device_release_empty; 377 if (cx->card->video_inputs->video_type == CX18_CARD_INPUT_VID_TUNER) 378 s->video_dev.tvnorms = cx->tuner_std; 379 else 380 s->video_dev.tvnorms = V4L2_STD_ALL; 381 s->video_dev.lock = &cx->serialize_lock; 382 cx18_set_funcs(&s->video_dev); 383 return 0; 384 } 385 386 /* Initialize v4l2 variables and register v4l2 devices */ 387 int cx18_streams_setup(struct cx18 *cx) 388 { 389 int type, ret; 390 391 /* Setup V4L2 Devices */ 392 for (type = 0; type < CX18_MAX_STREAMS; type++) { 393 /* Prepare device */ 394 ret = cx18_prep_dev(cx, type); 395 if (ret < 0) 396 break; 397 398 /* Allocate Stream */ 399 ret = cx18_stream_alloc(&cx->streams[type]); 400 if (ret < 0) 401 break; 402 } 403 if (type == CX18_MAX_STREAMS) 404 return 0; 405 406 /* One or more streams could not be initialized. Clean 'em all up. */ 407 cx18_streams_cleanup(cx, 0); 408 return ret; 409 } 410 411 static int cx18_reg_dev(struct cx18 *cx, int type) 412 { 413 struct cx18_stream *s = &cx->streams[type]; 414 int vfl_type = cx18_stream_info[type].vfl_type; 415 const char *name; 416 int num, ret; 417 418 if (type == CX18_ENC_STREAM_TYPE_TS && s->dvb != NULL) { 419 ret = cx18_dvb_register(s); 420 if (ret < 0) { 421 CX18_ERR("DVB failed to register\n"); 422 return ret; 423 } 424 } 425 426 if (s->video_dev.v4l2_dev == NULL) 427 return 0; 428 429 num = s->video_dev.num; 430 /* card number + user defined offset + device offset */ 431 if (type != CX18_ENC_STREAM_TYPE_MPG) { 432 struct cx18_stream *s_mpg = &cx->streams[CX18_ENC_STREAM_TYPE_MPG]; 433 434 if (s_mpg->video_dev.v4l2_dev) 435 num = s_mpg->video_dev.num 436 + cx18_stream_info[type].num_offset; 437 } 438 video_set_drvdata(&s->video_dev, s); 439 440 /* Register device. First try the desired minor, then any free one. */ 441 ret = video_register_device_no_warn(&s->video_dev, vfl_type, num); 442 if (ret < 0) { 443 CX18_ERR("Couldn't register v4l2 device for %s (device node number %d)\n", 444 s->name, num); 445 s->video_dev.v4l2_dev = NULL; 446 return ret; 447 } 448 449 name = video_device_node_name(&s->video_dev); 450 451 switch (vfl_type) { 452 case VFL_TYPE_GRABBER: 453 CX18_INFO("Registered device %s for %s (%d x %d.%02d kB)\n", 454 name, s->name, cx->stream_buffers[type], 455 cx->stream_buf_size[type] / 1024, 456 (cx->stream_buf_size[type] * 100 / 1024) % 100); 457 break; 458 459 case VFL_TYPE_RADIO: 460 CX18_INFO("Registered device %s for %s\n", name, s->name); 461 break; 462 463 case VFL_TYPE_VBI: 464 if (cx->stream_buffers[type]) 465 CX18_INFO("Registered device %s for %s (%d x %d bytes)\n", 466 name, s->name, cx->stream_buffers[type], 467 cx->stream_buf_size[type]); 468 else 469 CX18_INFO("Registered device %s for %s\n", 470 name, s->name); 471 break; 472 } 473 474 return 0; 475 } 476 477 /* Register v4l2 devices */ 478 int cx18_streams_register(struct cx18 *cx) 479 { 480 int type; 481 int err; 482 int ret = 0; 483 484 /* Register V4L2 devices */ 485 for (type = 0; type < CX18_MAX_STREAMS; type++) { 486 err = cx18_reg_dev(cx, type); 487 if (err && ret == 0) 488 ret = err; 489 } 490 491 if (ret == 0) 492 return 0; 493 494 /* One or more streams could not be initialized. Clean 'em all up. */ 495 cx18_streams_cleanup(cx, 1); 496 return ret; 497 } 498 499 /* Unregister v4l2 devices */ 500 void cx18_streams_cleanup(struct cx18 *cx, int unregister) 501 { 502 struct video_device *vdev; 503 int type; 504 505 /* Teardown all streams */ 506 for (type = 0; type < CX18_MAX_STREAMS; type++) { 507 508 /* The TS has a cx18_dvb structure, not a video_device */ 509 if (type == CX18_ENC_STREAM_TYPE_TS) { 510 if (cx->streams[type].dvb != NULL) { 511 if (unregister) 512 cx18_dvb_unregister(&cx->streams[type]); 513 kfree(cx->streams[type].dvb); 514 cx->streams[type].dvb = NULL; 515 cx18_stream_free(&cx->streams[type]); 516 } 517 continue; 518 } 519 520 /* No struct video_device, but can have buffers allocated */ 521 if (type == CX18_ENC_STREAM_TYPE_IDX) { 522 /* If the module params didn't inhibit IDX ... */ 523 if (cx->stream_buffers[type] != 0) { 524 cx->stream_buffers[type] = 0; 525 /* 526 * Before calling cx18_stream_free(), 527 * check if the IDX stream was actually set up. 528 * Needed, since the cx18_probe() error path 529 * exits through here as well as normal clean up 530 */ 531 if (cx->streams[type].buffers != 0) 532 cx18_stream_free(&cx->streams[type]); 533 } 534 continue; 535 } 536 537 /* If struct video_device exists, can have buffers allocated */ 538 vdev = &cx->streams[type].video_dev; 539 540 if (vdev->v4l2_dev == NULL) 541 continue; 542 543 if (type == CX18_ENC_STREAM_TYPE_YUV) 544 videobuf_mmap_free(&cx->streams[type].vbuf_q); 545 546 cx18_stream_free(&cx->streams[type]); 547 548 video_unregister_device(vdev); 549 } 550 } 551 552 static void cx18_vbi_setup(struct cx18_stream *s) 553 { 554 struct cx18 *cx = s->cx; 555 int raw = cx18_raw_vbi(cx); 556 u32 data[CX2341X_MBOX_MAX_DATA]; 557 int lines; 558 559 if (cx->is_60hz) { 560 cx->vbi.count = 12; 561 cx->vbi.start[0] = 10; 562 cx->vbi.start[1] = 273; 563 } else { /* PAL/SECAM */ 564 cx->vbi.count = 18; 565 cx->vbi.start[0] = 6; 566 cx->vbi.start[1] = 318; 567 } 568 569 /* setup VBI registers */ 570 if (raw) 571 v4l2_subdev_call(cx->sd_av, vbi, s_raw_fmt, &cx->vbi.in.fmt.vbi); 572 else 573 v4l2_subdev_call(cx->sd_av, vbi, s_sliced_fmt, &cx->vbi.in.fmt.sliced); 574 575 /* 576 * Send the CX18_CPU_SET_RAW_VBI_PARAM API command to setup Encoder Raw 577 * VBI when the first analog capture channel starts, as once it starts 578 * (e.g. MPEG), we can't effect any change in the Encoder Raw VBI setup 579 * (i.e. for the VBI capture channels). We also send it for each 580 * analog capture channel anyway just to make sure we get the proper 581 * behavior 582 */ 583 if (raw) { 584 lines = cx->vbi.count * 2; 585 } else { 586 /* 587 * For 525/60 systems, according to the VIP 2 & BT.656 std: 588 * The EAV RP code's Field bit toggles on line 4, a few lines 589 * after the Vertcal Blank bit has already toggled. 590 * Tell the encoder to capture 21-4+1=18 lines per field, 591 * since we want lines 10 through 21. 592 * 593 * For 625/50 systems, according to the VIP 2 & BT.656 std: 594 * The EAV RP code's Field bit toggles on line 1, a few lines 595 * after the Vertcal Blank bit has already toggled. 596 * (We've actually set the digitizer so that the Field bit 597 * toggles on line 2.) Tell the encoder to capture 23-2+1=22 598 * lines per field, since we want lines 6 through 23. 599 */ 600 lines = cx->is_60hz ? (21 - 4 + 1) * 2 : (23 - 2 + 1) * 2; 601 } 602 603 data[0] = s->handle; 604 /* Lines per field */ 605 data[1] = (lines / 2) | ((lines / 2) << 16); 606 /* bytes per line */ 607 data[2] = (raw ? VBI_ACTIVE_SAMPLES 608 : (cx->is_60hz ? VBI_HBLANK_SAMPLES_60HZ 609 : VBI_HBLANK_SAMPLES_50HZ)); 610 /* Every X number of frames a VBI interrupt arrives 611 (frames as in 25 or 30 fps) */ 612 data[3] = 1; 613 /* 614 * Set the SAV/EAV RP codes to look for as start/stop points 615 * when in VIP-1.1 mode 616 */ 617 if (raw) { 618 /* 619 * Start codes for beginning of "active" line in vertical blank 620 * 0x20 ( VerticalBlank ) 621 * 0x60 ( EvenField VerticalBlank ) 622 */ 623 data[4] = 0x20602060; 624 /* 625 * End codes for end of "active" raw lines and regular lines 626 * 0x30 ( VerticalBlank HorizontalBlank) 627 * 0x70 ( EvenField VerticalBlank HorizontalBlank) 628 * 0x90 (Task HorizontalBlank) 629 * 0xd0 (Task EvenField HorizontalBlank) 630 */ 631 data[5] = 0x307090d0; 632 } else { 633 /* 634 * End codes for active video, we want data in the hblank region 635 * 0xb0 (Task 0 VerticalBlank HorizontalBlank) 636 * 0xf0 (Task EvenField VerticalBlank HorizontalBlank) 637 * 638 * Since the V bit is only allowed to toggle in the EAV RP code, 639 * just before the first active region line, these two 640 * are problematic: 641 * 0x90 (Task HorizontalBlank) 642 * 0xd0 (Task EvenField HorizontalBlank) 643 * 644 * We have set the digitzer such that we don't have to worry 645 * about these problem codes. 646 */ 647 data[4] = 0xB0F0B0F0; 648 /* 649 * Start codes for beginning of active line in vertical blank 650 * 0xa0 (Task VerticalBlank ) 651 * 0xe0 (Task EvenField VerticalBlank ) 652 */ 653 data[5] = 0xA0E0A0E0; 654 } 655 656 CX18_DEBUG_INFO("Setup VBI h: %d lines %x bpl %d fr %d %x %x\n", 657 data[0], data[1], data[2], data[3], data[4], data[5]); 658 659 cx18_api(cx, CX18_CPU_SET_RAW_VBI_PARAM, 6, data); 660 } 661 662 void cx18_stream_rotate_idx_mdls(struct cx18 *cx) 663 { 664 struct cx18_stream *s = &cx->streams[CX18_ENC_STREAM_TYPE_IDX]; 665 struct cx18_mdl *mdl; 666 667 if (!cx18_stream_enabled(s)) 668 return; 669 670 /* Return if the firmware is not running low on MDLs */ 671 if ((atomic_read(&s->q_free.depth) + atomic_read(&s->q_busy.depth)) >= 672 CX18_ENC_STREAM_TYPE_IDX_FW_MDL_MIN) 673 return; 674 675 /* Return if there are no MDLs to rotate back to the firmware */ 676 if (atomic_read(&s->q_full.depth) < 2) 677 return; 678 679 /* 680 * Take the oldest IDX MDL still holding data, and discard its index 681 * entries by scheduling the MDL to go back to the firmware 682 */ 683 mdl = cx18_dequeue(s, &s->q_full); 684 if (mdl != NULL) 685 cx18_enqueue(s, mdl, &s->q_free); 686 } 687 688 static 689 struct cx18_queue *_cx18_stream_put_mdl_fw(struct cx18_stream *s, 690 struct cx18_mdl *mdl) 691 { 692 struct cx18 *cx = s->cx; 693 struct cx18_queue *q; 694 695 /* Don't give it to the firmware, if we're not running a capture */ 696 if (s->handle == CX18_INVALID_TASK_HANDLE || 697 test_bit(CX18_F_S_STOPPING, &s->s_flags) || 698 !test_bit(CX18_F_S_STREAMING, &s->s_flags)) 699 return cx18_enqueue(s, mdl, &s->q_free); 700 701 q = cx18_enqueue(s, mdl, &s->q_busy); 702 if (q != &s->q_busy) 703 return q; /* The firmware has the max MDLs it can handle */ 704 705 cx18_mdl_sync_for_device(s, mdl); 706 cx18_vapi(cx, CX18_CPU_DE_SET_MDL, 5, s->handle, 707 (void __iomem *) &cx->scb->cpu_mdl[mdl->id] - cx->enc_mem, 708 s->bufs_per_mdl, mdl->id, s->mdl_size); 709 return q; 710 } 711 712 static 713 void _cx18_stream_load_fw_queue(struct cx18_stream *s) 714 { 715 struct cx18_queue *q; 716 struct cx18_mdl *mdl; 717 718 if (atomic_read(&s->q_free.depth) == 0 || 719 atomic_read(&s->q_busy.depth) >= CX18_MAX_FW_MDLS_PER_STREAM) 720 return; 721 722 /* Move from q_free to q_busy notifying the firmware, until the limit */ 723 do { 724 mdl = cx18_dequeue(s, &s->q_free); 725 if (mdl == NULL) 726 break; 727 q = _cx18_stream_put_mdl_fw(s, mdl); 728 } while (atomic_read(&s->q_busy.depth) < CX18_MAX_FW_MDLS_PER_STREAM 729 && q == &s->q_busy); 730 } 731 732 void cx18_out_work_handler(struct work_struct *work) 733 { 734 struct cx18_stream *s = 735 container_of(work, struct cx18_stream, out_work_order); 736 737 _cx18_stream_load_fw_queue(s); 738 } 739 740 static void cx18_stream_configure_mdls(struct cx18_stream *s) 741 { 742 cx18_unload_queues(s); 743 744 switch (s->type) { 745 case CX18_ENC_STREAM_TYPE_YUV: 746 /* 747 * Height should be a multiple of 32 lines. 748 * Set the MDL size to the exact size needed for one frame. 749 * Use enough buffers per MDL to cover the MDL size 750 */ 751 if (s->pixelformat == V4L2_PIX_FMT_HM12) 752 s->mdl_size = 720 * s->cx->cxhdl.height * 3 / 2; 753 else 754 s->mdl_size = 720 * s->cx->cxhdl.height * 2; 755 s->bufs_per_mdl = s->mdl_size / s->buf_size; 756 if (s->mdl_size % s->buf_size) 757 s->bufs_per_mdl++; 758 break; 759 case CX18_ENC_STREAM_TYPE_VBI: 760 s->bufs_per_mdl = 1; 761 if (cx18_raw_vbi(s->cx)) { 762 s->mdl_size = (s->cx->is_60hz ? 12 : 18) 763 * 2 * VBI_ACTIVE_SAMPLES; 764 } else { 765 /* 766 * See comment in cx18_vbi_setup() below about the 767 * extra lines we capture in sliced VBI mode due to 768 * the lines on which EAV RP codes toggle. 769 */ 770 s->mdl_size = s->cx->is_60hz 771 ? (21 - 4 + 1) * 2 * VBI_HBLANK_SAMPLES_60HZ 772 : (23 - 2 + 1) * 2 * VBI_HBLANK_SAMPLES_50HZ; 773 } 774 break; 775 default: 776 s->bufs_per_mdl = 1; 777 s->mdl_size = s->buf_size * s->bufs_per_mdl; 778 break; 779 } 780 781 cx18_load_queues(s); 782 } 783 784 int cx18_start_v4l2_encode_stream(struct cx18_stream *s) 785 { 786 u32 data[MAX_MB_ARGUMENTS]; 787 struct cx18 *cx = s->cx; 788 int captype = 0; 789 struct cx18_stream *s_idx; 790 791 if (!cx18_stream_enabled(s)) 792 return -EINVAL; 793 794 CX18_DEBUG_INFO("Start encoder stream %s\n", s->name); 795 796 switch (s->type) { 797 case CX18_ENC_STREAM_TYPE_MPG: 798 captype = CAPTURE_CHANNEL_TYPE_MPEG; 799 cx->mpg_data_received = cx->vbi_data_inserted = 0; 800 cx->dualwatch_jiffies = jiffies; 801 cx->dualwatch_stereo_mode = v4l2_ctrl_g_ctrl(cx->cxhdl.audio_mode); 802 cx->search_pack_header = 0; 803 break; 804 805 case CX18_ENC_STREAM_TYPE_IDX: 806 captype = CAPTURE_CHANNEL_TYPE_INDEX; 807 break; 808 case CX18_ENC_STREAM_TYPE_TS: 809 captype = CAPTURE_CHANNEL_TYPE_TS; 810 break; 811 case CX18_ENC_STREAM_TYPE_YUV: 812 captype = CAPTURE_CHANNEL_TYPE_YUV; 813 break; 814 case CX18_ENC_STREAM_TYPE_PCM: 815 captype = CAPTURE_CHANNEL_TYPE_PCM; 816 break; 817 case CX18_ENC_STREAM_TYPE_VBI: 818 #ifdef CX18_ENCODER_PARSES_SLICED 819 captype = cx18_raw_vbi(cx) ? 820 CAPTURE_CHANNEL_TYPE_VBI : CAPTURE_CHANNEL_TYPE_SLICED_VBI; 821 #else 822 /* 823 * Currently we set things up so that Sliced VBI from the 824 * digitizer is handled as Raw VBI by the encoder 825 */ 826 captype = CAPTURE_CHANNEL_TYPE_VBI; 827 #endif 828 cx->vbi.frame = 0; 829 cx->vbi.inserted_frame = 0; 830 memset(cx->vbi.sliced_mpeg_size, 831 0, sizeof(cx->vbi.sliced_mpeg_size)); 832 break; 833 default: 834 return -EINVAL; 835 } 836 837 /* Clear Streamoff flags in case left from last capture */ 838 clear_bit(CX18_F_S_STREAMOFF, &s->s_flags); 839 840 cx18_vapi_result(cx, data, CX18_CREATE_TASK, 1, CPU_CMD_MASK_CAPTURE); 841 s->handle = data[0]; 842 cx18_vapi(cx, CX18_CPU_SET_CHANNEL_TYPE, 2, s->handle, captype); 843 844 /* 845 * For everything but CAPTURE_CHANNEL_TYPE_TS, play it safe and 846 * set up all the parameters, as it is not obvious which parameters the 847 * firmware shares across capture channel types and which it does not. 848 * 849 * Some of the cx18_vapi() calls below apply to only certain capture 850 * channel types. We're hoping there's no harm in calling most of them 851 * anyway, as long as the values are all consistent. Setting some 852 * shared parameters will have no effect once an analog capture channel 853 * has started streaming. 854 */ 855 if (captype != CAPTURE_CHANNEL_TYPE_TS) { 856 cx18_vapi(cx, CX18_CPU_SET_VER_CROP_LINE, 2, s->handle, 0); 857 cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 3, s->handle, 3, 1); 858 cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 3, s->handle, 8, 0); 859 cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 3, s->handle, 4, 1); 860 861 /* 862 * Audio related reset according to 863 * Documentation/video4linux/cx2341x/fw-encoder-api.txt 864 */ 865 if (atomic_read(&cx->ana_capturing) == 0) 866 cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 2, 867 s->handle, 12); 868 869 /* 870 * Number of lines for Field 1 & Field 2 according to 871 * Documentation/video4linux/cx2341x/fw-encoder-api.txt 872 * Field 1 is 312 for 625 line systems in BT.656 873 * Field 2 is 313 for 625 line systems in BT.656 874 */ 875 cx18_vapi(cx, CX18_CPU_SET_CAPTURE_LINE_NO, 3, 876 s->handle, 312, 313); 877 878 if (cx->v4l2_cap & V4L2_CAP_VBI_CAPTURE) 879 cx18_vbi_setup(s); 880 881 /* 882 * Select to receive I, P, and B frame index entries, if the 883 * index stream is enabled. Otherwise disable index entry 884 * generation. 885 */ 886 s_idx = &cx->streams[CX18_ENC_STREAM_TYPE_IDX]; 887 cx18_vapi_result(cx, data, CX18_CPU_SET_INDEXTABLE, 2, 888 s->handle, cx18_stream_enabled(s_idx) ? 7 : 0); 889 890 /* Call out to the common CX2341x API setup for user controls */ 891 cx->cxhdl.priv = s; 892 cx2341x_handler_setup(&cx->cxhdl); 893 894 /* 895 * When starting a capture and we're set for radio, 896 * ensure the video is muted, despite the user control. 897 */ 898 if (!cx->cxhdl.video_mute && 899 test_bit(CX18_F_I_RADIO_USER, &cx->i_flags)) 900 cx18_vapi(cx, CX18_CPU_SET_VIDEO_MUTE, 2, s->handle, 901 (v4l2_ctrl_g_ctrl(cx->cxhdl.video_mute_yuv) << 8) | 1); 902 903 /* Enable the Video Format Converter for UYVY 4:2:2 support, 904 * rather than the default HM12 Macroblovk 4:2:0 support. 905 */ 906 if (captype == CAPTURE_CHANNEL_TYPE_YUV) { 907 if (s->pixelformat == V4L2_PIX_FMT_UYVY) 908 cx18_vapi(cx, CX18_CPU_SET_VFC_PARAM, 2, 909 s->handle, 1); 910 else 911 /* If in doubt, default to HM12 */ 912 cx18_vapi(cx, CX18_CPU_SET_VFC_PARAM, 2, 913 s->handle, 0); 914 } 915 } 916 917 if (atomic_read(&cx->tot_capturing) == 0) { 918 cx2341x_handler_set_busy(&cx->cxhdl, 1); 919 clear_bit(CX18_F_I_EOS, &cx->i_flags); 920 cx18_write_reg(cx, 7, CX18_DSP0_INTERRUPT_MASK); 921 } 922 923 cx18_vapi(cx, CX18_CPU_DE_SET_MDL_ACK, 3, s->handle, 924 (void __iomem *)&cx->scb->cpu_mdl_ack[s->type][0] - cx->enc_mem, 925 (void __iomem *)&cx->scb->cpu_mdl_ack[s->type][1] - cx->enc_mem); 926 927 /* Init all the cpu_mdls for this stream */ 928 cx18_stream_configure_mdls(s); 929 _cx18_stream_load_fw_queue(s); 930 931 /* begin_capture */ 932 if (cx18_vapi(cx, CX18_CPU_CAPTURE_START, 1, s->handle)) { 933 CX18_DEBUG_WARN("Error starting capture!\n"); 934 /* Ensure we're really not capturing before releasing MDLs */ 935 set_bit(CX18_F_S_STOPPING, &s->s_flags); 936 if (s->type == CX18_ENC_STREAM_TYPE_MPG) 937 cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 2, s->handle, 1); 938 else 939 cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 1, s->handle); 940 clear_bit(CX18_F_S_STREAMING, &s->s_flags); 941 /* FIXME - CX18_F_S_STREAMOFF as well? */ 942 cx18_vapi(cx, CX18_CPU_DE_RELEASE_MDL, 1, s->handle); 943 cx18_vapi(cx, CX18_DESTROY_TASK, 1, s->handle); 944 s->handle = CX18_INVALID_TASK_HANDLE; 945 clear_bit(CX18_F_S_STOPPING, &s->s_flags); 946 if (atomic_read(&cx->tot_capturing) == 0) { 947 set_bit(CX18_F_I_EOS, &cx->i_flags); 948 cx18_write_reg(cx, 5, CX18_DSP0_INTERRUPT_MASK); 949 } 950 return -EINVAL; 951 } 952 953 /* you're live! sit back and await interrupts :) */ 954 if (captype != CAPTURE_CHANNEL_TYPE_TS) 955 atomic_inc(&cx->ana_capturing); 956 atomic_inc(&cx->tot_capturing); 957 return 0; 958 } 959 EXPORT_SYMBOL(cx18_start_v4l2_encode_stream); 960 961 void cx18_stop_all_captures(struct cx18 *cx) 962 { 963 int i; 964 965 for (i = CX18_MAX_STREAMS - 1; i >= 0; i--) { 966 struct cx18_stream *s = &cx->streams[i]; 967 968 if (!cx18_stream_enabled(s)) 969 continue; 970 if (test_bit(CX18_F_S_STREAMING, &s->s_flags)) 971 cx18_stop_v4l2_encode_stream(s, 0); 972 } 973 } 974 975 int cx18_stop_v4l2_encode_stream(struct cx18_stream *s, int gop_end) 976 { 977 struct cx18 *cx = s->cx; 978 979 if (!cx18_stream_enabled(s)) 980 return -EINVAL; 981 982 /* This function assumes that you are allowed to stop the capture 983 and that we are actually capturing */ 984 985 CX18_DEBUG_INFO("Stop Capture\n"); 986 987 if (atomic_read(&cx->tot_capturing) == 0) 988 return 0; 989 990 set_bit(CX18_F_S_STOPPING, &s->s_flags); 991 if (s->type == CX18_ENC_STREAM_TYPE_MPG) 992 cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 2, s->handle, !gop_end); 993 else 994 cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 1, s->handle); 995 996 if (s->type == CX18_ENC_STREAM_TYPE_MPG && gop_end) { 997 CX18_INFO("ignoring gop_end: not (yet?) supported by the firmware\n"); 998 } 999 1000 if (s->type != CX18_ENC_STREAM_TYPE_TS) 1001 atomic_dec(&cx->ana_capturing); 1002 atomic_dec(&cx->tot_capturing); 1003 1004 /* Clear capture and no-read bits */ 1005 clear_bit(CX18_F_S_STREAMING, &s->s_flags); 1006 1007 /* Tell the CX23418 it can't use our buffers anymore */ 1008 cx18_vapi(cx, CX18_CPU_DE_RELEASE_MDL, 1, s->handle); 1009 1010 cx18_vapi(cx, CX18_DESTROY_TASK, 1, s->handle); 1011 s->handle = CX18_INVALID_TASK_HANDLE; 1012 clear_bit(CX18_F_S_STOPPING, &s->s_flags); 1013 1014 if (atomic_read(&cx->tot_capturing) > 0) 1015 return 0; 1016 1017 cx2341x_handler_set_busy(&cx->cxhdl, 0); 1018 cx18_write_reg(cx, 5, CX18_DSP0_INTERRUPT_MASK); 1019 wake_up(&s->waitq); 1020 1021 return 0; 1022 } 1023 EXPORT_SYMBOL(cx18_stop_v4l2_encode_stream); 1024 1025 u32 cx18_find_handle(struct cx18 *cx) 1026 { 1027 int i; 1028 1029 /* find first available handle to be used for global settings */ 1030 for (i = 0; i < CX18_MAX_STREAMS; i++) { 1031 struct cx18_stream *s = &cx->streams[i]; 1032 1033 if (s->video_dev.v4l2_dev && (s->handle != CX18_INVALID_TASK_HANDLE)) 1034 return s->handle; 1035 } 1036 return CX18_INVALID_TASK_HANDLE; 1037 } 1038 1039 struct cx18_stream *cx18_handle_to_stream(struct cx18 *cx, u32 handle) 1040 { 1041 int i; 1042 struct cx18_stream *s; 1043 1044 if (handle == CX18_INVALID_TASK_HANDLE) 1045 return NULL; 1046 1047 for (i = 0; i < CX18_MAX_STREAMS; i++) { 1048 s = &cx->streams[i]; 1049 if (s->handle != handle) 1050 continue; 1051 if (cx18_stream_enabled(s)) 1052 return s; 1053 } 1054 return NULL; 1055 } 1056